Apparatus for cleaning air from sand-blast apparatus.



Patented Aug. l9, I902. l E. MATHEWSON. "APPARATUS FOR OLEANI NG AIR FROM SAND BLAST APPARATUS.

nca'non filed. Sept 20 1901) (No Model.)

'ru: N'onms mcas W-{UfOID-LMO-I-WLQHINGTON, b c. 7

7 chamber, which may be of any character.

UNITED STATES PATENT JEREMIAH E. MATHEWSON, OF BROAD HEATH, NEAR MANCHESTER, ENGLAND, ASSIGNOR, BY MESNE ASSIGNMENTS, TO BENJAMIN C. TILGHMAN, JR., AND RICHARD TILGHMAN, TRADING -AS THEFIRM OF B. C. 85 R. A. TILGHMAN, OF PHILADELPHIA, PENNSYLVANIA.

APPARATUS FORIYCLEANING AIR FROM SAND-TBLAST APPARATUS.

SPECIFICATION forming part of Letters iatentNo. 707,134, dated August 19,1902. Application filed September 20, 1901. Serial No. 75,743. (No model.)

T0 at whom it may concern.-

SON, a subject of the King of Great Britain and'Ireland, residing in Broad Heath, near Manchester, in the county of Lancaster, Eng- Figure 1 is a side elevation of my apparatus, and Fig. 2 afront elevation of the same apparatus. i

A diagrammatically indicates a sand blast B is the dust-pipe leading from the said chamber and communicating directly with a fancasing C, which in turn communicates with a delivery-pipe D, leading into the top of a water-tank, (indicated'at F.) This tank is shown as provided with a cleaning-door G at bottom, through which mud can be removed, and with an air-outlet pipe, (indicated at M.) It is also provided with a water-outlet pipe H, the end h of which enters the tank at what is intended to be its water-level, (indicated at f.) The water-pipe H is shown provided with a valve I, by which it can be closed or regula ted,and leads into a pump, (indicated at J said pump havinga delivery-pipe K, which passes, as shown, through the pipe B and is provided at its upper end with a spray-nozzle L, directed'to deliver water against the blades of the fan E, contained in the casing C. As shown and as-conveniently constructed, the pipeK passes through the wall of the pipe B; but it is immaterial in what manner or just where the nozzle L is introduced, so

. .long as it throws the water against the blades Be it known that I, JEREMIAH E. MATHEW of the fan. V

In operation the fan E being set in motion the air is drawn from the sand-blast chamber A through-the pipe B into the fan-casing C,

passing through-the fan casing, through the pipe D, and down against the water in the tank F. At the same time the pump J sucks the water from the tank F, drawing it through dust-laden air passing through the fan, the

result of which is that the air is thoroughly cleaned by the water and all mud precipi= tated through the pipe B into the water in the tankF, clean air being-allowed to escape through the pipe M. The water-level in the tank F is maintained constant by the action of pump J ,which draws off the water as fast as it rises above the determined level 1".

Having now described my invention, what I claim as new, and desire-to secure by Letters Patent, is-- A 1. The combination with'a sand-blast plant and an exhaust-conduit pipe leading-from said plant and adapted to draw dust-ladened air. from said locality, of an exhaust-fan coupled to said conduitand a nozzle arranged to throw a jet or jets of. water upon the rotating blades of the fan, whereby said water is finely divided and thoroughly mixed with the dust-ladened air.

2. The combination with a sand-blast plant and an exhaust-conduit pipe leading from said plant and adapted to draw dust-ladened air from said locality, of an exhanst-fan'coupled to said conduit, a nozzle arranged to throw a jet or jets of water upon the rotating blades of the fan, wherebysaid wateris finely divided and thoroughly mixed with the dust'-' and an exhaust-conduit pipe leading from maintaining Water at approximately the same said plant and adapted to draw dust-ladened level, and a delivery-pipe leading from the IO air from said locality, of an exhaust-fan coufan to a point in the tank above the waterpled to said conduit, a nozzle arranged to level.

5 throw a jet or jets of Water upon the rotating J. E. MATHEWSON.

blades of the fan whereby said water is finely \Vitnesses: divided and thoroughly mixed with the dust- CHAS. F. MYERS, ladened air, a water-tank having means for i D. STEWART. 

